Method and device for checking storage battery internal resistance tester
A calibration method and technology of calibration devices, which are applied in the direction of measuring devices, instruments, and measuring electrical variables, can solve the problems of lack of calibration and testing standard basis and methods, etc.
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[0032] see figure 1 The calibration of the internal resistance tester of the battery consists of a precision high-current low-resistance standard rheostat R, an AC / DC ammeter A, an AC / DC voltmeter V, a standard DC source E, a frequency meter F, an emergency stop button ST, a transfer switch S and Composition of connecting wires. In addition to the frequency meter, the meter adopts AC and DC dual-purpose meters to reduce the number of meters and simplify the connection.
[0033] Both the tested product and the test instrument have protection functions, but in order to prevent accidents, an emergency stop button is set to forcibly interrupt the calibration.
[0034] figure 1 As shown, connecting the internal resistance tester of the tested battery means that the tested product forms a calibration circuit: the standard rheostat R is connected in series between the two voltage terminals U+ and U- of the tested product, the AC / DC voltmeter V and the frequency meter F They are re...
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